A shoe store developed the following estimated regression equation relating sales to inventory investment and advertising expenditures. ý = 25 + 12x, + 7x2 where x, = inventory investment ($1,000s) x,...

Extracted text: A shoe store developed the following estimated regression equation relating sales to inventory investment and advertising expenditures. ý = 25 + 12x, + 7x2 where x, = inventory investment ($1,000s) x, = advertising expenditures ($1,000s) y = sales ($1,000s). (a) Predict the sales (in dollars) resulting from a $15,000 investment in inventory and an advertising budget of $11,000. $ (b) Interpret b, and b, in this estimated regression equation. Sales can be expected to increase by $ for every dollar increase in inventory investment when advertising expenditure is held constant. Sales can be expected to increase by $ for every dollar increase in advertising expenditure when inventory investment is held constant. B Tutorial